Scott C Merrill
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I examine dynamics of change within pest-crop agroecosystems and study the effects of climate change on agroecosystems. To address these issues, I use a variety of techniques in population modeling, spatiotemporal forecast modeling and landscape ecology. An important goal of my work  is the creation of applicable and predictive models to inform Integrated Pest Management systems.

Research Assistant Professor
Department of Plant and Soil Science
University of Vermont
63 Carrigan Drive
Jeffords Hall, Room 217
Burlington, VT 05405-1737
Ph: (802) 656-0711
Fax: (802) 656-4656

                                      preparing a mixture of aphids and
                                      cream of wheat (c) used to infest
                                      winter wheat

Recent news
June 2012. I am currently developing code for an Ecological Gaming class that I hope to teach in the spring of 2013. This class focuses on teaching the foundations of Ecology through the lens of a computer simulation game. Check out this animation of a simulation of the tri-trophic world.

March 2012. I have just returned from a engaging three day trip out to the University of Idaho to give a talk for their Interdisciplinary Climate Change Seminar. My talk, entitled "Predicting the Effects of Climate Change on Agricultural Pest Incidence: How Secure is Our Food Supply?" discussed some of the possible effects of climate change on the Sunflower stem weevil, the Russian wheat aphid, and then finished with a broad sketch describing the potential impact of increasing temperature on global pest pressure.

January 2012. My work with Sheri Pucherelli, Frank Peairs, and Terri Randolph was published in the journal Arthropod-Plant Interactions. This work entitled "Russian wheat aphid (Hemiptera: Aphididae) reproduction and development on five nonclutivated greass hosts" discusses host quality and the potential for selection pressure on many of the grass host species that the Russian wheat aphid uses during the oversummering months (and likely year round).

December 2011. I have officially landed at the University of Vermont in the Department of Plant and Soil Science. I am excited about getting started.

November 2011. Come see my research posters at this year's Entomological Society of America's meeting in Reno. I will be presenting my work entitled "Climate change and the perils of linear thinking" on Wednesday, November 16 in Exhibition Hall 3
, First Floor (Reno-Sparks Convention Center). Also, check out some of the my work with Terri Randolph and others entitled "Suppression of Russian wheat aphid (Diuraphis noxia) populations with natural enemies present in the wheat system" which is also presented on Wednesday in Exhibition Hall 3.

November 2011. I am just back from spending a week with Josh Tewksbury at the University of Washington. I think we will have some strong work coming out soon looking at the effects of climate change on pest pressure on a global scale.

October 2011. I am starting a new position as a Research Assistant Professor at the University of Vermont in the Department of Plant and Soil Science! There are some really exciting prospects with people out there that I am eager to start working on.

August 2011. Check out my podcast with Dr Jai Ranganathan on Curiouser and Curiouser Podcasts, a Miller-McCune production. We discuss the future of food, some of the crazy pests in agriculture and how the Organic foods label may reduce our food supply resilence.

June 2011. Our work (SCM, Shawn Walter, Frank Peairs and Jennifer Hoeting) describing the within-field spatial variablility of the Western bean cutworm has finally been published by Enviromental Entomology (entitled "Spatial variability of Western bean cutworm populations in irrigated corn. This work provides a first step towards developing precision pest management tactics for controlling this pest of corn and beans.

June 2011.
Assefa Gebre-Amlak did a great job in getting our work on degree-day models for the Sunflower stem weevils out to the farming community through a publication called the Golden Plains Area Agricultural Handbook (this section in the handbook was authored by SCM, Assefa Gebre-Amlak, J. Scott Armstrong and Frank Peairs). This research provides degree day information to help time scouting for Sunflower stem weevil in sunflower crops.

June 2011. I presented my work at two different venues this month. The first was a seminar given as part of the
NCEAS (National Center for Ecological Analysis and Synthesis) Ecolunch Seminar Series, and the second was for the Ecosystem Sciences Division of the CSIRO (Commonwealth Scientific and Industrial Research Organization) in Brisbane, Australia. I really enjoyed these interactions and felt I was able to communicate the necessity of serious forethought when trying to parameterize the variance signal in spatially explicit climate change modeling of insect pests.

April 2011. Very exciting news! On April 9th, my son Brennan Cole Adair Merrill was born at 7 lbs, 4 oz.

March 2011. I just finished teaching a Kids Do Ecology program with 5th graders from Monroe Elementary School in Santa Barbara. Our project examined how the shape of a birds beak could influence what food it consumes. I will be making a link soon on this website to show our project, including methods, results and the poster that the class created to explain their project. 

December 2010. I will be presenting my research on the potential effects of climate change on the habitat of the Russian wheat aphid at the Entomological Society of America meeting in San Diego at 8:00 am on Tuesday, December 14th in the Town and Country Hotel and Convention Center, Grand Exhibit Hall. Research Poster

December 2010. Two of my peer-reviewed Colorado State University Technical Reports will be published this month. The first, entitled "Estimating Russian wheat aphid (Homoptera: Aphididae) overwintering success using weather data", describes development of a predictive model for estimating spring Russian wheat aphid densities using overwintering weather conditions. The second, entitled "Examining the correlation between fall and spring population densities of the Russian wheat aphid (Hemiptera: Aphididae)", seeks to illustrate the correlation between the density of Russian wheat aphids before the onset of winter to the density of aphids in the late winter and early spring.

April 2010. I enjoyed giving a talk for the NCEAS (National Center for Ecological Analysis and Synthesis) Ecolunch Seminar Series. My talk discussed the link between Precision Agriculture and Landscape Ecology. I used an example that analyzed different fertilization strategies (a traditional fertilization strategy versus a Precision Agriculture based yield zone strategy) and a Precision Pest Management example to illustrate the importance of Precision Agricultural strategy and the need for quality ecological models to inform management decisions.

March 2010. I have just returned from my first trip to Washington DC since I was a kid. While I was there I presented my work on developing outbreak prediction models to improve Russian wheat aphid pest management strategy at the USDA-Agriculture & Food Research Initiative, Arthropods & Nematodes Biology & Management Program’s awardee workshop.

February 2010. I just sent in proofs to the Journal of Economic Entomology for a manuscript entitled "Non-Linear Degree Day Models of the Sunflower Stem Weevil (Curculionidae: Coleoptera)" from work with Assefa Gebre-Amlak, John "Scott" Armstrong and Frank Peairs that should help time scouting for Sunflower stem weevil in sunflower crops.

August 2009. Environmental Entomology just published "Diuraphis noxia Reproduction and Development with a Comparison of Intrinsic Rates of Increase to Other Important Small Grain Aphids: A Meta-analysis" based on my work with Thomas Holtzer and Frank Peairs . This work was innovative not only for its findings about life history traits of small grain aphids but because of the way that we handled the lack of consistently reported units of error (e.g., the standard error of the measurement) when modeling meta-data.

August 2009. Colorado State University's Agricultural Experiment Station just published our technical bulletin that discusses the displacement of Russian wheat aphid Biotype 1 by Russian wheat aphid Biotype 2, which discusses the spread of a new and virulent (to wheat) biotype of this aphid and its impacts on wheat breeding.

July 2009. Frank Peairs and I just received a grant from USDA-CSREES Agriculture and Food Research Initiative to start work on developing outbreak prediction models for the improvement of Russian wheat aphid pest management strategies across many of the Great Plains states.

April 2009. My first color figure was just published in the Journal of Economic Ento
mology within an article entitled "Modeling Spatial Variation of Russian Wheat Aphid Overwintering Populations in Colorado Winter Wheat" based on modeling work with Thomas Holtzer, Frank Peairs and Phil Lester. This figure depicts modeled Russian wheat aphid densities within a winter wheat field in Eastern Colorado.